https://www.siliconvalley.com/2014/06/15/bill-and-melinda-gates-plead-with-stanford-grads-to-improve-the-world/monthly0.72016-08-17T04:59:56+00:00Silicon Valleyen-USPressRelease1970-01-01T00:33:34+00:00Bill and Melinda Gates plead with Stanford grads to improve the world